Admission-pipe for two-stroke internal-combustion engines.



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ADMISSION PIPE FOR TWO STROKE INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN. 11, 1910.

1,063,01 1'. Patented May 27, 1913.

s SHEETS-SHEET 1.

- E. 66TH.

ADMISSION PIPE FOR TWO STROKE INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN.11, I910.

1,063,01 1 Patented May 27, 1913.

3 SHEETS-SHEET 2.

COTE.

ADMISSION PIPE FOR TWO STROKE INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN.11, 1910.

- Patented May 27, 1913.

3 SHEBTSSHEET 3.-

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ELYSEE corn, or PANTIN, FRANCE, assrenon T0 socrnrn nns ETABLISSEMENTS corn, or ran'rm, FRANCE.

ADMISSION-PIPE FOB. TWO-STROKE INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented May 27, 1913.

Application filed January 11, 1910. Serial No. 587,428.

To all whom it may concern: I Be it known that I, ELYsnn Corn, a citizen of the Republic of France, residing at Combustion Engines,of which the following is a specification.

This invention relates to internal combustion engines working on the two stroke cycle,

and has for its main object to provide an improved means for feeding the gas or explosive medium from the carburetor to the respective explosion chambers at predetermined intervals.

A further object of the present invention is to so arrange the feeding means that it will occupy the least possible space and the same time increase the efliciency of the feed.

Further objects and advantages will be apparent from the following description with reference to the accompanying drawings wherein Figure 1 is a front elevation of one em-.

bodiment of my invention. Figs. 2 and 3 are end views of the same. Fig. 4c is a front elevation of another embodiment of the invention. Figs. 5 and 6 illustrate end views of the embodiment disclosed in Fig. 4, the end closing plates being removed. Fig. 7 is a vertical sectional view of one cylinder of an engine with my invention as embodied in Figs. 1, 2 and 3 in combination therewith. Fig. 8 illustratesa front elevation ofan engine showing my invention as embodied in Figs. 4., 5 and 6, in section. Fig. 9 is a transverse sectional view on the line 99 of Fig. 8.

In all of the figures a and 0 show the admission inlets from the carbureter; e and f the simultaneous suction and delivery passage-ways each of which lead to one of the pump cylinders; and b and d represent the ports through which the explosive medium is admitted to the respective explosive cylinders.

As has been stated above the present invention relates to that type of engine known as the two cycle, and the present embodiment is in combination with a two cylinder engine of that type.

In the drawings wherein like reference characters indicate like parts throughout the difierent views, the numerals 1 and 2 designate the two cylinders of the engine. Each of these cylinders is made in two diameters so as to house the pump and explosive piston, see Fig. 7.

' Secured to the cylinder casing is a distributing chamber 3 which according to Figs. 1, 2, 3 and 7 is divided into internal chambers or channels it and Z, by the dividing wall or diaphragm 4 so that these channels lie concentric to one another. These chambers are in communication with the carbureter, by 'means of the ports a and 0 respectively and also individually communicate with the 0ppcsite pump cylinders, that is the channel 76, through passage-way e is in communication with the pump chamber of the cylinder 1 while the channel Z through passage-way f communicates with the pump chamber of cylinder 2. Thus'it will be seen that on the downward stroke of the pump piston in cylinder 2, a suction will be created in channel Z which will open the spring pressed valve 5, and'ca-use a charge of gas to be drawn from the carburetor into the channel Z and the pump chamber of cylinder 2, while on the upward stroke of'the pump pistonof cylinder 2, the charge of gas will be compressed and delivered into the explosion chamber of cylinder 1 via 'the port d, the products of the previously exploded charge in this chamber exhausting'through the port 6 to the atmosphere. It will of course be understood that the action of the pump piston'of cylinder 1 and the delivery to cylinder 2is exactly the same. Each of the channels In and Z is provided with a spring pressed valve 5 which controls the flow of gas from the carbureter. As will be understood, the valves of the respective channels is and Z are opened by the suction created by the descending of the pump piston connected with the respective. channels. This action permitsa chargeof gas from thecarbureter to be drawn into. the. distributing chamber, which on the upstroke of the said piston is compressed and delivered into theexplosion chamber of the other cylinder. Of course, as soon as the suction, caused by the downward movement of the pump ceases, the spring causes the instant closing of the valve so that a back flow of gas to the carburcter is prevented. Following the cycles of the engine and starting with the piston in cylinder 1 at the end of its downward stroke, as shown in Fig.

ber the gas condensed by the piston moving in cylinder 2 passes through passage-way f into the upper part of cylinder 1 but is de flected upwardly by the rounded projection on the upper end of the piston in cylinder 1 and prevented from passing into the exhaust momentarily left open. As the piston in cylinderv 1 moves on its upward stroke both of these ports (Z and 6 are closed and thecon tents of the cylinder is compressed b the upward stroke. On the upward strolie of the piston in cylinder 1 gas is drawn into the lower part of cylinder 1 through valve 5 on the former downward stroke is compressed in the outer channel K and having no exit through the valve 5 which opens inwardly is compressed in the outer channel K and finds an outlet only at port Z) of cylinder 2. On the upward stroke of piston 1, piston 2 begins its downward stroke, receiving the gas from the outer channel K after passing the inlet port 6. On the downward stroke of piston 2 gas from the carbureter is drawn into the inner passage Z through a valve 5 opening inwardly and is compressed by the upward stroke of piston 2 passing through port f, chamber Z and portd into cylinder 1, the gas not being able to escape from the inwardly opening inlet valve 5.

While the function and operation of the structure disclosed in Figs. 4, 5, O, 8 and 9 is substantially the same as that described relative to the structure disclosed in Figs. 1, 2, 3 and 7, the arrangement of the channels or chambers A Z is different. The distributing chamber in this form is provided with a cen tral rib or diaphragm 7 which divides the chamber into two parallel channels A" and Z which'like the channels 7.: and Z of Figs. 1, 2, 3 and 7 communicate with the carbureter through pipes a and 0 and also with the ex plosion chambers of the respective cylinders, by means of the ports d and Z).

In order that the distributing chamber may be easily inspected and cleaned and to facilitate the assembling thereof, the inclosing ends p of the distributing chamber are the combination with the pump and explosive chambers, together with their pistons operating consecutively, of a gas distributing chamber containing concentric channels, each of said channels communicating with a gas supply, and the pump chamber of one of the cylinders, whereby a charge of gas is drawn in and compressed by each of the pump pistons alternately and delivered to the explosive chamber of the other cylinder.

2. In a double cylinder combustion engine,

the combination with the pump and. explosive chambers, together with their pistons operating consecutively, of a gas distributing chamber containing concentric valve controlled channels, 'each of said channels-communicating with a gas supply, and the pump chamber of one of the cylinders, whereby a charge of gas is drawn in and compressed by each of the pump pistons alternately and delivered to the explosive chamber of the other cylinder.

8. In a double cylinder combustion engine, the combination with a pair of explosion and pump chambers together with ex-- plosion and pump pistons operating consecutively, of a distributing chamber having a plurality of channels, one of said channels communicating with the pump chamber of one cylinder and the explosion chamber of the other cylinder, valve controlled ports establishing separate communication between each of said channels and a gas supply; whereby charges of gas will be gathered and compressed by the pump piston of one cylinder and delivered to the explosion chamber of the other cylinder.

In testimony whereof I have hereunto set my hand. in the presence of'two subscribing witnesses.

ELYSEE COTE. lVitnesses H. C. Coxn,

EDWARD WOLF. 

